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Powdery mildew on blossoms. The powdery mildew fungus likes young tissue. As tissue begins to grow, the fungus will colonize young, green tissue as it emerges. Photo: Kari Peter, Penn State
Spraying by the Numbers: Fungicide Resistance Management - Articles Articles

Spraying by the Numbers: Fungicide Resistance Management

Kari A. Peter, Ph.D., Alan R. Biggs

Growers can prevent resistance to fungicides by alternating chemicals by FRAC group also known as "spraying by the numbers." More
Zinc deficiency shows up in new growth as light green to yellow coloring between green veins. Photo: John Esslinger, Penn State
Zinc Deficiency In Vegetable Crops - News News
Zinc deficiency in vegetable crops has become more common in the last few years. More
Cyclamen mite leaf symptoms. Photo: Kathy Demchak, Penn State
The 2018 Berry Season in Review - News News

The 2018 Berry Season in Review

02/07/2019

The 2018 summer weather was certainly memorable. Most of the state was extremely wet for the growing season, and this was reflected in some of the problems we were seeing. More
Coleus muestra los síntomas de la aplicación del agua con altos sólidos disueltos totales y conductividad eléctrica. Foto: Tom Ford, Penn State
Calidad del Agua de Riego Para Túneles Altos - News News
La calidad del agua tiene una gran influencia en el crecimiento y desarrollo de los cultivos. More
Coleus showing symptoms from applying water with high total dissolved solids and electrical conductivity. Photo: Tom Ford, Penn State
Irrigation Water Quality for High Tunnels - News News
Water quality has a large influence on crop growth and development. More
Photo: Tom Ford, Extensión de Penn State
Informe de Prueba del Suelo del Túnel Alto: Materia Orgánica y Capacidad de Intercambio Catiónico - News News
El año pasado, hemos estado trabajando con 27 agricultores y agricultoras de Pennsylvania para entender mejor los suelos en túneles altos. More
Brown marmorated stink bug adult and nymphs. Photo: Greg Krawczyk, Penn State
Brown Marmorated Stink Bug Management Survey for Commercial Producers - News News
A nationwide survey is currently underway to gather information from farmers and growers on the economic impact of the brown marmorated stink bug (BMSB) on agriculture. More
Apple rootstock in tissue culture: Photo by Yongjian Chang, North American Plants Inc.
Advances in Rootstock Genetics and Breeding - Articles Articles
Developing new fruit rootstocks and cultivars using traditional breeding techniques is a slow process because a new rootstock must have many desirable characteristics without many undesirable traits. More
Drip irrigation in orchard. Photo: Long He, Penn State
Drip Irrigation for Tree Fruit Orchards in Pennsylvania - Articles Articles
Irrigation is the application of controlled amounts of water to plants at needed intervals. More
Early snow on apple blossoms. Photo: Tara Baugher, Penn State
Registration is Open for the 2019 Commercial Tree Fruit Meetings - News News
Penn State Extension has planned nine regional educational meetings for commercial tree fruit producers in 2019. More
Photo by Tricia Borneman, Blooming Glen Farm
Manteniendo Frescos los Productos Agrícolas Frescos - Articles Articles
Manejo postcosecha para venta en mercados de agricultores y venta directa de la huerta a instituciones. More
Sanitation will be critical for managing disease for the 2019 season. Photo: K. Peter, Penn State
Disease Update: Cleaning Up the Messy 2018 Season - News News
There were many diseases affecting tree fruit growers in 2018. Sanitation will be very important while preparing for the 2019 season. More
Photo: Tara Baugher, Penn State
Fruit Disorders: Prevention of Scarf Skin on Apple Fruit - Articles Articles

Fruit Disorders: Prevention of Scarf Skin on Apple Fruit

James Schupp, Ph.D., Melanie Schupp, Edwin Winzeler, Tara Baugher, Daniel Weber, Donald Seifrit

Scarf skin is a physiological disorder of apple fruit that causes a dull gray cloudy or waxy appearance on the surface of the peel (epidermis) where it is most readily observed on varieties with a red or dark red background. More
Leaf infected with Marssonina. Photo: K. Peter, Penn State
Apple Disease - Marssonina Blotch - Articles Articles

Apple Disease - Marssonina Blotch

Kari A. Peter, Ph.D.

Marssonina blotch, caused by Marssonina caronaria, is a foliar disease first identified in Pennsylvania in September 2017. More
Photo: Kathy Hunt, University of Maryland
2018 Apple Maturity Assessment: Final Report of the 2018 Season - News News
The hot, wet summer and early fall weather continued to delay the late-season apple crop until the middle of October. More
GoldRush apples in a tall-spindle planting. Photo: Kathy Hunt, University of Maryland
2018 Apple Maturity Assessment: Mid-October Report - News News
The hot, wet summer and early fall weather continued to affect the apple crop in October. More
Penn State Spray Record-Keeping Spreadsheet
Penn State Spray Record-Keeping Spreadsheet - News News
The downloadable Spray Record-Keeping Spreadsheet for tree fruit was updated for 2018, and it simplifies record-keeping for your packer and processor. More
Summary of Apple Fruit Maturity During August and September 2018
Summary of Apple Fruit Maturity During August and September 2018 - News News
This year’s bloom was later than in 2017. With a later bloom and a cool rainy season, we initially wondered when this year’s apple crop would be ready to pick. More
Photo: Holly Raguza, Pennsylvania Department of Agriculture
How You Can Comply with the Spotted Lanternfly Quarantine Regulations - Articles Articles
Some tips to help you avoid spreading Spotted Lanternfly (SLF) and be in compliance with the Pennsylvania Department of Agriculture (PDA) regulations. More
Ulmer Farms fueron comenzadas en 2001 por Seth Ulmer. Foto: Francesco Di Gioia, Penn State
En El Camino: Granjas de Ulmer (Ulmer Farms) - Articles Articles

En El Camino: Granjas de Ulmer (Ulmer Farms)

Elsa Sanchez, Ph.D., Tom Butzler, Francesco Di Gioia, Ph. D.

Ulmer Farms es una granja de 1,200 acres en el Condado de Clinton, donde Seth y Liz Ulmer han estado cultivando soja, maíz, tomates por procesamiento, y frijoles verdes por procesamiento desde 2001. More
2018 Maturity Assessment: Weeks Nine and Ten
2018 Maturity Assessment: Weeks Nine and Ten - News News
The hot, wet summer weather continues to affect our apple crop. While size is not a problem, red color development continues to be problematic in most varieties. More
Ulmer Farms was started in 2001 by Seth Ulmer. Photo: Francesco Di Gioia, Penn State
On the Road: Processing Snap Beans at Ulmer Farms - Articles Articles

On the Road: Processing Snap Beans at Ulmer Farms

Elsa Sanchez, Ph.D., Tom Butzler, Francesco Di Gioia, Ph. D.

Ulmer Farms is a 1,200-acre farm in Clinton County where Seth and Liz Ulmer have been growing soybeans, corn, processing tomatoes, and processing snap beans since 2001. More
Does Your Business Need a Spotted Lanternfly Permit?
Does Your Business Need a Spotted Lanternfly Permit? - Articles Articles
Find out if your business or organization is required to have a Spotted Lanternfly permit in Pennsylvania. More
2018 Apple Maturity Assessments: Week Eight
2018 Apple Maturity Assessments: Week Eight - News News
This week we added Autumn Crisp, Daybreak Fuji, and CrimsonCrisp to our evaluations. More
Gray mold sporulation has a dark gray, concentric ring pattern and may develop lesions on the surface of the plant stems. Photo: Beth K. Gugino, Penn State
Vegetable Disease Update: September 13, 2018 - News News
This fall as temperatures drop, dew periods extend, and the skies remain cloudy, be on the lookout for late blight and Botrytis gray mold in high tunnel tomatoes. More
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